<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- (this file generated automatically by Image::ExifTool::BuildTagLookup) -->
<head>
<title>GIF Tags</title>
<link rel=stylesheet type='text/css' href='style.css' title='Style'>
</head>
<body>
<h2 class=top>GIF Tags</h2>
<p>This table lists information extracted from GIF images. See
<a href="http://www.w3.org/Graphics/GIF/spec-gif89a.txt">http://www.w3.org/Graphics/GIF/spec-gif89a.txt</a> for the official GIF89a
specification.</p>
<blockquote>
<table class=frame><tr><td>
<table class=inner cellspacing=1>
<tr class=h><th>Tag Name</th>
<th>Writable</th><th>Values / <span class=n>Notes</span></th></tr>
<tr>
<td>Comment</td>
<td class=c>yes</td>
<td>&nbsp;</td></tr>
<tr class=b>
<td>Duration</td>
<td class=c>no</td>
<td><span class=s><span class=n>(duration of a single animation iteration)</span></span></td></tr>
<tr>
<td>Extensions</td>
<td class=c>-</td>
<td>--&gt; <a href='GIF.html#Extensions'>GIF Extensions Tags</a></td></tr>
<tr class=b>
<td>FrameCount</td>
<td class=c>no</td>
<td><span class=s><span class=n>(number of animated images)</span></span></td></tr>
<tr>
<td>GIFVersion</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr class=b>
<td>ScreenDescriptor</td>
<td class=c>-</td>
<td>--&gt; <a href='GIF.html#Screen'>GIF Screen Tags</a></td></tr>
<tr>
<td>Text</td>
<td class=c>no</td>
<td><span class=s><span class=n>(text displayed in image)</span></span></td></tr>
<tr class=b>
<td>TransparentColor</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
</table></td></tr></table></blockquote>

<h2><a name='Extensions'>GIF Extensions Tags</a></h2>
<p>Tags extracted from GIF89a application extensions.</p>
<blockquote>
<table class=frame><tr><td>
<table class=inner cellspacing=1>
<tr class=h><th>Tag&nbsp;ID</th><th>Tag Name</th>
<th>Writable</th><th>Values / <span class=n>Notes</span></th></tr>
<tr>
<td>'ICCRGBG1/012'</td>
<td>ICC_Profile</td>
<td class=c>yes</td>
<td>--&gt; <a href='ICC_Profile.html'>ICC_Profile Tags</a></td></tr>
<tr class=b>
<td>'MIDICTRL/Jon'</td>
<td>MIDIControl</td>
<td class=c>-</td>
<td>--&gt; <a href='GIF.html#MIDIControl'>GIF MIDIControl Tags</a></td></tr>
<tr>
<td>'MIDISONG/Dm7'</td>
<td>MIDISong</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr class=b>
<td>'NETSCAPE/2.0'</td>
<td>Animation</td>
<td class=c>-</td>
<td>--&gt; <a href='GIF.html#Animation'>GIF Animation Tags</a></td></tr>
<tr>
<td>'XMP Data/XMP'</td>
<td>XMP</td>
<td class=c>yes</td>
<td>--&gt; <a href='XMP.html'>XMP Tags</a></td></tr>
</table></td></tr></table></blockquote>

<h2><a name='MIDIControl'>GIF MIDIControl Tags</a></h2>
<p>Information extracted from the MIDI control block extension.</p>
<blockquote>
<table class=frame><tr><td>
<table class=inner cellspacing=1>
<tr class=h><th>Index1</th><th>Tag Name</th>
<th>Writable</th><th>Values / <span class=n>Notes</span></th></tr>
<tr>
<td class=r title='0 = 0x0'>0</td>
<td>MIDIControlVersion</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr class=b>
<td class=r title='1 = 0x1'>1</td>
<td>SequenceNumber</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr>
<td class=r title='2 = 0x2'>2</td>
<td>MelodicPolyphony</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr class=b>
<td class=r title='3 = 0x3'>3</td>
<td>PercussivePolyphony</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr>
<td class=r title='4 = 0x4'>4</td>
<td>ChannelUsage</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr class=b>
<td class=r title='6 = 0x6'>6</td>
<td>DelayTime</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
</table></td></tr></table></blockquote>

<h2><a name='Animation'>GIF Animation Tags</a></h2>
<p>Information extracted from the &quot;NETSCAPE2.0&quot; animation extension.</p>
<blockquote>
<table class=frame><tr><td>
<table class=inner cellspacing=1>
<tr class=h><th>Index1</th><th>Tag Name</th>
<th>Writable</th><th>Values / <span class=n>Notes</span></th></tr>
<tr>
<td class=r title='1 = 0x1'>1</td>
<td>AnimationIterations</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
</table></td></tr></table></blockquote>

<h2><a name='Screen'>GIF Screen Tags</a></h2>
<p>Information extracted from the GIF logical screen descriptor.</p>
<blockquote>
<table class=frame><tr><td>
<table class=inner cellspacing=1>
<tr class=h><th>Index1</th><th>Tag Name</th>
<th>Writable</th><th>Values / <span class=n>Notes</span></th></tr>
<tr>
<td class=r title='0 = 0x0'>0</td>
<td>ImageWidth</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr class=b>
<td class=r title='2 = 0x2'>2</td>
<td>ImageHeight</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr>
<td class=r title='4 = 0x4'>4.1</td>
<td>HasColorMap</td>
<td class=c>no</td>
<td><span class=s>[val &gt;&gt; 7 &amp; 0x1]
  <br>0 = No
  <br>1 = Yes</span></td></tr>
<tr class=b>
<td class=r title='4 = 0x4'>4.2</td>
<td>ColorResolutionDepth</td>
<td class=c>no</td>
<td><span class=s>[val &gt;&gt; 4 &amp; 0x7]</span></td></tr>
<tr>
<td class=r title='4 = 0x4'>4.3</td>
<td>BitsPerPixel</td>
<td class=c>no</td>
<td><span class=s>[val &amp; 0x7]</span></td></tr>
<tr class=b>
<td class=r title='5 = 0x5'>5</td>
<td>BackgroundColor</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr>
<td class=r title='6 = 0x6'>6</td>
<td>PixelAspectRatio</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
</table></td></tr></table></blockquote>

<hr>
(This document generated automatically by Image::ExifTool::BuildTagLookup)
<br><i>Last revised Dec 8, 2021</i>
<p class=lf><a href='index.html'>&lt;-- ExifTool Tag Names</a></p>
</body>
</html>
